There are two basic configurations: continuous wire and
individual springs (which in turn have multiple variants).

The continuous wire consists of a zigzag or double spiral
wire. The system provides a good support, however, it does not isolate the
movements of the person with whom it sleeps and, if they are of poor quality,
it is prone to suffer deformations.

In the case of individually packed springs, these are
interconnected by means of wires. If the connections are scarce, the sleepjunkie.net could become deformed with use. The
ends of the springs are attached to the insulation and on this is the
upholstery. This spring technology provides a very durable, stable base and
independently of beds that, in combination with other technologies that we will
see below and that counteracts the firmness and innate rigidity of the springs,
are probably the best solution in terms of breathability and durability.

According to the reinforcement of the springs, it offers
different degrees of firmness. The areas that are more deformed over time are
those that support more pressure, this is hip, shoulders, head and feet. It is
good that they are reinforced to prolong durability.

In short: spring mattresses provide
elasticity, cushioning and transpiration, which are fundamental factors for a
good rest.

Viscoelastic Mattresses

The viscoelastic material was developed by NASA with unique
and innovative properties to relieve body pressure. It was in the early 90’s
when it was incorporated into domestic use.

It is a material developed from organic macromolecules with
excellent properties for rest, such as adaptability and firmness. The
viscoelastic foam mattresses are composed of several parts of variable density,
depending on the desired firmness.

This foam is a synthetic material that adapts ergonomically
to the body, eliminating any point of pressure; reacts to body temperature
maintaining the natural position of our back, providing adequate support of the
spine and reducing and relieving pressure points. It also facilitates muscle
relaxation and increases blood circulation by eliminating the pressure of the mattress
on the body, which allows staying for longer in the same resting position, thus
favoring our sleep. Its open cellular structure guarantees an aeration creating
a microclimate that guarantees optimal ventilation that avoids the accumulation
of heat, being its maintenance minimal.

However, it is highly recommended to inquire about the
density level of the mattress in question (it is measured in kg / m3), since a
very low density like that of conventional foams will not provide a good
adaptation and will feel very rigid.

In short: The viscoelastic mattress copies the
shape of the body like a mold. Thanks to this, the pressure is distributed
evenly over the entire body, avoiding areas of pressure that hinder
circulation. The consequence is that we move less and therefore the dream is
more repairing.

As mentioned above, the Spring Mattresses and Viscoelastic
Mattresses are very good mattresses. And these are the most popular mattresses.
These mattresses also relieve the waist pain, so people do it very much.